I'm trying to convert OpenStreetMap data (osm.pbf file) to "z/x/y.pbf" folder/file structure and show the map offline using Openlayers 6 and Ionic.
What I did so far is:
Downloaded osm.pbf file (https://download.geofabrik.de/europe/netherlands/flevoland.html)
Used Maperitive to open osm.pbf and used generate-mbtiles [minzoom=0 maxzoom=16] to generate mbtiles
Used mbutil (https://github.com/mapbox/mbutil) with mb-util --image_format=pbf input_folder output_folder command.
After this I end up with pbfs inside proper folder structure - so far so great.
Show pbfs with openlayers (note that I'm using Ionic so here's some Angular code)
this.map = new Map({
layers: [
new VectorTileLayer({
declutter: true,
source: new VectorTileSource({
format: new MVT(),
url: 'http://localhost:8100/assets/downloaded-osm-pbfs/{z}/{x}/{y}.pbf'
}),
style: createMapboxStreetsV6Style(Style, Fill, Stroke, Icon, Text)
})
],
target: 'map',
view: new View({
center: [0, 0],
zoom: 2
})
});
After this I end up with "Error: Unimplemented type: 6" once I try to view map inside browser.
Interesting thing is that if I use https://openmaptiles.com/downloads and download mbtiles from there and do steps 3-4 (in step 3 I just do extra step and uncompress pbfs because openmaptiles gzip's the files) everything is displayed properly, but problem here is that openmaptiles provide 14 zoom levels and I need 16 zoom levels.
Any idea how to overcome this issue? Any help will be appreciated!
In my experience, this error occurs when the PBF is compressed, which OpenLayers cannot digest. Try them unzipped:
gzip --decompress --recursive --suffix .pbf .
Related
I'm currently using the google-maps-api-loader so I can render a google map in vue.js and place markers on it. The data are all retrieved from a json file and I had no problem with the markers but now I have to connect them using an encoded path from the json file. I have some sample pure javascript that decodes the route and I'm trying to do the same in Vue.js but it seems the geometry thing isn't working. What can i do?
I
path: google.maps.geometry.encoding.decodePath(route)
First, you have to enable geometry on
Vue.use(VueGoogleMaps, { load: { key: 'xxxxxxxx', libraries: 'places,geometry', , installComponents: true});
Then on your target file,
initial a google:gmapApi on computed,
Finally, the path should be like this
:path="google && new google.maps.geometry.encoding.decodePath(routes)"
How do I get an image preview for a Types.File field in the admin UI.
It says "The FS adapter supports all the default Keystone file schema fields. It also additionally supports and enables the filename path (required)." However when I try (doc):
format: function(item, file){
return '<img src="/files/'+file.filename+'" style="max-width: 300px">'
}
Nothing appears in the UI
The format function hasn't been working for a while as far as I can tell from the Keystone GitHub. I don't know if the function exists in Keystone 4.0. Reference here.
You could fork the current beta and patch the function yourself if you need this immediately.
You can find it at https://github.com/keystonejs/keystone/blob/v4.0.0-beta.5/fields/types/file/FileType.js#L81
Doesn't seem right to me, though. I hope they will fix it before releasing 4.0, along with the missing File Array type.
Image previews are now possible in the latest master branch of keystone (see https://github.com/keystonejs/keystone/pull/4509). At the moment you need to depend on the git version of keystone, so put this in your package.json and run npm install:
"keystone": "https://github.com/keystonejs/keystone.git"
In your model, specify thumb: true on the image field in question. You also need the url property in the schema. For example:
const storage = new keystone.Storage({
adapter: keystone.Storage.Adapters.FS,
fs: {
path: keystone.expandPath('./uploads/images'),
publicPath: '/images/'
},
schema: {
url: true,
}
})
ImageUpload.add({
name: { type: Types.Key, index: true },
image: {
type: Types.File,
storage: myStorage,
thumb: true
},
createdTimeStamp: { type: String }
});
The admin UI should now show a small preview of the image and a link to it.
I have implemented my sencha architect project with a possibility to do a photo (with phonegap). After taking a photo, I need to see the photo directly into another container with other information (the picture will be smaller than the original...and there will be written above and below).
How do I open the new container and display the image in a smaller size?
please help me, I don't understand how can I manage the photo
Now I use this code but if you have something better....
var me = this;
Ext.device.Camera.capture({
success: function(image) {
me.add({
xtype:'image', // Commento
src: image
});
},
source: 'camera',
cameraDirection: navigator.camera.Direction.FRONT,
destination: 'file'bu
});
thank you
Carlo
Sencha documentation got an example for it. See http://docs.sencha.com/touch/2.3.1/#!/api/Ext.device.Camera
Ext.device.Camera.capture({
success: function(image) {
imageView.setSrc(image);
},
quality: 75,
width: 200,
height: 200,
destination: 'data'
});
You can also use
destination: 'url'
in that case the image argument of the callback function will be a file URL what you can use in a container template as the source of the html image.
I have a problem. In my sencha touch application I have list items like .pdf, .png, ... If user taps on one of them file should be download on his mobile device.
How can I do this? I have no idea :-)
Thanks for help.
You can use phonegap file api to download files, If you are using sencha touch 2.3 or above just follow the bellow steps.
Install phonegap in sencha project by executing following command at the project root and this command creates phonegap folder inside project root.
sencha phonegap init
You need to install two phonegap plugins to work with file api by executing two following commands inside phonegap folder.
$ phonegap local plugin add https://git-wip-us.apache.org/repos/asf/cordova-plugin-file.git
$ phonegap local plugin add https://git-wip-us.apache.org/repos/asf/cordova-plugin-file-transfer.git
Now you can start working file api in sencha touch and you can follow below code i used for one of my project.
If you want to download file, first you need to read device file system and then using file system you can download files.
getFileSystem : function(){
var me =this;
Ext.Viewport.mask({
xtype: 'loadmask',
message: 'Downloading files..'
});
var extfs = Ext.create("Ext.device.filesystem.Cordova");
extfs.requestFileSystem({
type: window.PERSISTENT,
size: 1024 * 1024,
success: function(fSys) {
window.fileSys = fSys;
Ext.Viewport.unmask();
me.fileDownload("myfolder/filename.png","http://someurl");
},
failure: function(error){
alert(error);
Ext.Viewport.unmask();
}
});
}
I am passing fileLocation(location you want to store file inside phone) & url in above function.
fileDownload: function(fileLocation,Url){
Ext.Viewport.mask({
xtype: 'loadmask',
message: 'Downloading files..'
});
var me = this;
var fSys = window.fileSys
if(fSys){
var file = Ext.create('Ext.device.filesystem.FileEntry',
fSys.fs.root.toURL() + fileLocation, fSys);
file.download({
source: Url,
success: function(entry){
Ext.Msg.alert('SUCCESS', 'Image successfully downloaded');
Ext.Viewport.unmask();
},
failure: function(error){
Ext.Msg.alert('ERROR', 'Download failed');
Ext.Viewport.unmask();
}
});
}
}
Now can see image at internalMemorycard/myfolder/filename.png
Sencha docs
Ext.device.filesystem.Cordova
Ext.device.filesystem.FileEntry
If you are using sencha touch 2.2 or below only change is instead of using sencha class you need to directly use phonegap api.
For reading file system & File download follow phonegap documentation.
Sencha basically operates over HTML, CSS & JS. Rather than doing this using Sencha just implement it similar to how you would do it in HTML then integrate into your application.
Eg: Homework
Try this
document.location= url;
Try the following code it may help you.
var newWindow = window.open('filepath', '_self'); //were filepath is the path of file with extension.
In one of my views I would like to display a PDF, which is accesible via URL. This should be done without opening an extra tab in the browser, and without downloading the PDF (to view it outside the browser). It should be visible embedded within the Ember application.
What I have in mind is:
Use the URL to get the PDF and make it accessible to the ember application.
Use a special "PDF view" to display the PDF.
Is this possible? What options do I have to display an embedded PDF in an Ember application?
Displaying a PDF is not really related to ember, because to view a PDF you need a PDF plugin installed in your browser (which is mostly installed by default depending by the browser).
That said, a possible solution I could imagine could be to create a custom ember view with the tagName iframe on which you set the src attribute to the link referring to the PDF.
Example:
App.PDFView = Ember.View.extend({
tagName: 'iframe',
attributeBindings: ['src', 'width', 'height', 'frameborder'],
src: 'pdffile.pdf',
width: 800,
height: 600,
frameborder: 0
});
I've also used width, height and frameborder only for convenience so you can control some of the iframe's attributes easily from within ember. Here a working demo.
You can also go with something more elaborated and use a js lib like http://pdfobject.com/ which you then initialize in your view's didInsertElement hook:
App.PDFView = Ember.View.extend({
src: 'pdffile.pdf',
width: 800,
height: 600,
didInsertElement: function() {
new PDFObject({
url: this.get('src'),
width: this.get('width'),
height: this.get('height')}
).embed(this.get('elementId'));
}
});
(haven't tested the latter, but you get the point)
And then use this App.PDFView like a normal ember view in your templates.
{{view App.PDFView}}
Or your can set the src, width & height directly from within your template like
{{view App.PDFView src="pdffile.pdf" width="600" height="800"}}
Hope it helps.
You can certainly leverage the Ember PDFJS Addon by doing:
ember install ember-pdfjs
The README on GitHub describes the installation and use cases.
In short, the addon provides your Ember project with a component, pdf-document, which you can use in your HTMLBars template like so:
{{pdf-document src=[model.src]}}
... there are other permutations of what src can be (including a string file path, resource URI, or Uint8Array buffer).
If you don't see a feature that you need, please suggest in the Issues.